Shower unit



FIG. 1 is an elevated front perspective view of a shower unit showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is another side view thereof, as seen from the right rear side of FIG. 1;

FIG. 5 is another side view thereof, as seen from the left rear side of FIG. 1;

FIG. 6 is another side view thereof, as seen from right front of FIG. 1; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a shower unit, as shown and described. 